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E. RIMAILHO.

REGULATING DEVICE FOR THE FLOW 0F LIQUIDIN ORDNANCE BUFFEBS.

Patented Oct. 14, 1919.

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REGULATING DEVICE4 FOR THE FLOW OF LIQUID IN ORDNANCE BUFFERS.APPLICATION man MAY3.191B.

1,318,923. Patented Oct. 14,1919.

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' "NTED SflATES? PATENT @moa v EMILE RIMAILHQ, or Esmapa/ENCE,AssI'GNoE-fro ooMPAcvfiviE nEs FoEsEs ET AAcIEEIEs DE LA MARINE EnrnHoivrEooUET, or Panis, FRANCE.

riaEofULATIA1\`Tcr DEVICE rEon TREE-Lower LIQUID vIN onDNANcE-EUEEEEs.

Viiafaaa To all 'whom' t may concern.'

Be it known that I, EMILE RIMAILHo,'a citizen of the French Republic,and residing in Paris, France, 98 Rue dela Victoire, consultingengineer, Vhave invented certain newV and useful Improvements in andRelating to Regulating Devices for the Flowy of Liquid inOrdnance-Buffers, of which the following is' a complete specification.

v A regulating device for the flow'of liquid in ordnance-buffers isknown,I inwhichV device the lift of a valve is rendered automaticallyvariable as a function of the angles of firing by means of-a setofinclines controlled by a suitably outlined cam. This device fulfilsVgenerally the requirements fof'A firing artillery-appliances. When,however,"

the conditions of firing require a very large variation of the possiblelength of recoil, this method of regulating the flow of the liquidbecomes insuilicient, because the undue reduction of the valve-liftgenerates eX- aggerated pressures liable to jeopardize both thestability and the resistance of the ordnance. It is then preferable touse the device constituting the object of this invention, which enablesall the necessary variations of recoil to be obtained by substitutingfor the action of the single valvespring of the known device thesimultaneous action of a second spring or elastic means, element ordevice, which produces in the bui'er two different rates of Working: theone, with a low pressure, for the angles of firing for which the longrecoil is possible; the other, with a high pressure, for the angles ofring for which the short recoil is indispensable.

In the accompanying drawing, which illustrates, by way of example, aconstructional form of the invention together with an alternative formthereof:

Figure 1 is a horizontal section through the device;

Fig. 2 is a modified form of the same, in which the elements are shownin sectional elevation.

In Fig. 1, 1 is the buffer-.body or casing in which is bored theinlet-orifice 2 of the liquid into the body3 of the regulating de-Yvice. The body 3 is held in the casing 1. 4 is the orifice for the flowof liquid to be regulated, 5 is the outlet-orice froml the regulatingdevice, 6 kthe recoil-valve, of which 7 and 24 are the faces orabutments,

Specification of Letters Patent. 1

Application ledMay 3, 1918. Serial No. 232,385.

and 8 is the first valve'fspring,Y bearing against 'the socket 9, uponwhich resses the packing 10 tightened by the was er V11 and nut 12. Inthe aXis of the parts 9, 10, 11,12 is located slidably the abutment rod13having a shoulder 14, againstwhich restsa second spring, the power ofwhich is :chosen in accordance with the momentum to'be deadened duringthe recoil, and constituted, in the present instance, by two pairs ofBelleville Vwashers 15. These washers rest, on the other'end, upon anadjust-r in`g-wedge v16 operated by "av controlling wedge 17', 'a'cylindrical projection '18'v of whichis engaged into the suitablyoutlined groove 19 of the cam 20 secured', eitheron tliei'n'ounting 21,or on an element independent from the swinging part of the ordnancearound the trunnions 22.

The second spring l5 is placed outside ofthe buifer as well as theinclines 16 and 17, the whole being guided by a socket 23 (fastened tothe buffer-body l), the eX- treme edge of which is outlined for thesliding movement of the controlling wedge 17 An annular shoulder 25 isscrew-threaded within the body 3, and is arranged near the socket 9. Theshoulder 2 5 is normally spaced fromthe shoulder 24C, but the shoulder24 contacts therewith when the valve 6 is Vforced downwardlysuiliciently.

Fig. 2 illustrates, at rest, a device similar to the foregoing one, butin which the second spring 15 is under initial tension and which has notthe shoulder 25 of Fig. 1. With this device, in all the conditions offiring, the valve-lift is Valways limited by the abutment-rod 13 restingagainst the second spring 15. It is obvious that the two springs 8 and15 are employed, and that the distance between the stems 7 and 1-3 maybe regulated by adjusting the cams or wedges 16 and 17. In this form ofdevice the stems 7 and 13 engage during the greater portion of thedownward movement of the valve, which is thereby opposed by thecomb-ined action of the springs 8 and 15.

What I claim is:

1. In apparatus of the character described, A Y

a body provided with a bore, having an in-f let and outlet, a valvemounted to slide within the bore toy control the discharge of fluidpressure from the outlet, a spring arranged within the bore to engagewith the valve to oppose its opening movement, a

yielding device having a substantially greater stiffness than saidspring and arranged near the same, a stem carried by the valve, and asecond stem engaged by the yielding device and disposed in the pathfluid pressure from the outlet, a spring arranged Within the boretoengage With the valve to oppose its opening movement, a yieldingdevice having. a substantially greater stiffness than said springandarranged near the same, a stem carried bythe valve, a second stemengaging the yielding device and disposed in the path of travelr of theiirst named stem and normally spaced therefrom and adapted to be engagedthere- Within the `bore to control the discharge of fluid pressure fromthe outlet, a spring arranged Within the bore to engage With the valveto oppose its opening movement, a yielding device having a substantiallygreater stiness than said vspring and arranged near the same, a stemcarried by the valve, a second stem en aging the yieldingdevice anddisposed in t e path of travel of the first named stem in spacedIrelation thereto, a disk to regulate the tension of the yielding deviceand having an inclined face, and a member to move the disk and having-aninclined lface to engage with the rst named inclined face.

, In testimony whereof I have hereunto set my hand .at Saint 'Etienne(France).

'EMILE RIMAILHO. [L a] Copies of this patent may be obtained for vevcents each, by adiessl'iixg the Commissioner of Patents.

Washington, ID. C.

